Mabtlkt doebb



M. DOERR.

COLLAPSIBLE LAMP EXTENSION.

APPLICATION FILED APR. 14, 1919.

Patented Dec. 30, 1919.

" IllIIllI"III-1|lllllllllmlllllllllllmlllllllllllllilmlmlll|\l||ll WITNESS M 6 w INVENTOR BY MARTIN D0222 ATTORNEYS unrrun STATES PATENT orrIoE.

MARTIN DOERR, OF SAN FRANCISCO, CALIFORNIA;

ooLLnPsIBLE LAMP EXTENSION.

To all whom z'tmay concern: p Be it known that I, MAR'rrn Donne; a citizen of the United States, and a resident of the city and county of San Francisco, State of California, have made a new and useful inventiont0 wit, Improvement in Collapsible Lamp Extensions; and I dohereby declare the following to be a full, clear, concise, and exact description of the same.

The present invention is an' improved collapsible extension for incandescent lamp bulbs. v p

The object of the invention is to provide an extension with a wide range of utility, which may be simply and economically constructed oi light stock material, and which when assembled will be easily and quickly extensible to many different useful positions, in which positions it willstand alone or depend from an overhang or ledge, such as a picture molding, theedge of a-door, the back of a chair, orwhich may be secured to a rod or grillev work, or removably attached to many articles at hand in the home or office. p 7

Another object of .the invention is to provide an extension containing these properties, which iscollapsible in very small and compact form, rendering it a valuable accessory for travelers as well as for household, ofiice or shop use. ,I V I In this specification and the annexed drawing, the invention is illustrated in the form considered to be ,thebest, but it is to be understood that the invention is not limited to such form, because it may be embodied in other forms, and it is also tobe understood that in and by the claims following the description, it is desired to cover the invention in whatsoever form it may be embodied.

In the accompanying one sheet of drawings,

Figure l is a perspective view of my improved extension in one position showing an electric light service wire and incandescent bulb installed thereon.

Fig. 2 is a view of the same in collapsed position. i

Fig. 8 is a side elevation of my extension in one possible position. I

Fig. 4 is a perspective view showing my extension attached to a vertical pipe.

Fig. 5 is a perspective view of an interior of a room showing various adaptations of my invention. I

Specification of Letters Patent. -Patented Dec, 1919,

, Application filed April 14, 1919;. seriaino. 289,965. i

Fig. 6 is a side elevation of a piano showingmy extension inuse as apiano lamp.

Fig. 7 is a modified fornrof one member. Referring to the drawing, Fig. 1, it "will be seen that thestructure herein described comprises a plurality of U shaped metal strips pivotally connected together in end to end relation; the saidU'shaped members being progressivelyv smaller as they approach the lamp socket in vorder that the entire structure may fold withinitselfl as shown in 2. The largerU shaped menr ber, represented by the numeral '1, is bent as shown ate and then curved overas indi cated at 33 to form a hook having a depending lip 4 adapted to enter a crevicesuch as a picture-molding;and also thelip "4;

serves to unitefthetwo hooks .3 giving greater. solidity tot-he structure and provid ing a more rigid attachment than asingle hook or than two single hooks. The lip 14 is provided with "a hole 5yto engagea nail orsimilar article from' which the support may behung. ThefUj shaped inemberl is pivotally connected a s'shown at 6 to a U shaped member 7 which in turn is pivoted as shown at8 toasimilarU shaped member 9. which is pivotedat the opposite ends-in a similar manner asshownf at 11 to a U shaped member 12.? I

Obviouslyfthe number oriu shaped niembers be increased to suit the need of the user,but I have shown a suitable number here to illustrate the principle of my invention. ble socket connected as shown at 13 for se- The U shaped member 12 has a s'uita curing an incandescent lamp socketl l car rying the bulb 15 which is served by the electric service wire 16 leading to any suit-, able conductor of electric current. The pivotal connection of the U shaped members shown 'at 6, 8 and 11, may be of various forms of conception, the purpose being to rivet or otherwise pivotally engage the said members in such a manner that frictional engagement will cause the structure to main tain any position into which it is bent to such a degree that it will support the weight of the socket 13 and bulb 15 and yet bereleasably secured and easily altered to a new position to suit the needs of the occasion under which it is used. .Obviously a split washer or fiber washer might be used to advantage without departing from the spirit of-my invention. In Fig. 3 I have shown the structure herein described in a self-supporting position, such as on a reading table or bed, or in the center of a dining table. In Fig. 5 I have shown at 17 a picture molding from which depends my improved light extension. In the same figure, at 18, I have shown a metal bedstead with my fixture attached thereto for the use of a reader or a patient. I have also shown in Fig. 5 another adaptation of my extension on a door 19 from the uppermost edge of which is suspended my extension before a mirror 21 illustrating a possible use for a person shavmg.

In Fig. 6 I have shown one adaptation of my extension to light the music on the piano. Obviously my invention is capable of many and various uses not shown here, but I have shown a number to illustrate the application thereof. In Fig. 4 I have shown a pipe or vertical rod 22 which might be a steam pipe or water service pipe or a vertical member of any grille work, the purpose here being to illustrate another method of attaclmient that makes my extension more adaptable. It will be seen that the extension is here shown fully extended from said pipe and obviously it might be collapsed and still be movable, as indicated by the dotted line 23. The structure is here supported by the weight of the U shaped members and the socket being fulcrumed on the rod 22 as shown at 24. The U shaped member 1 is provided with a plurality of holes 26. When it is desired to suspend my extension from a vertical rod such as 22, a nail or pin is inserted through two of the holes 26 as indicated at 27, on the lower portion of the hook member of the U shaped member 1. It will be seen that the leverage of the weight of the extension will cause an outward pull on the upper portion of the hook member as indicated at 28 and a pull in the opposite direction on the lower portion of said hook member which is held by the pin 27. This method secures the fixture from any tendency to slide downward on the rod 22 and yet permits its rotation as indicated by the dotted lines 23. This enables a workman for instance in a shop, to get a wide range of light for his work from such an adjustment.

In Fig. 7 I have shown a modification adaptable to all the U shaped members to prevent fouling or chafing the wire 16. The central transverse portion 30 of each member may be arcuate as shown in Fig. 7

Having thus described this invention, what I claim as new and desire to secure by LettersPatent of the United States is 1. An extensible incandescent lamp support comprising a plurality of U -sha'pe memberspivotally connected in end to end relation, one ofsaid members provided with a hook integral therewith at one end of the support and another of said U-shape members at the opposite end provided with means for engaging a lamp socket.

2. An extensible collapsible lamp support comprising a plurality of U-shape members of progressively decreasing width pivotally connected in end to end relation, one end member provided with means for engaging a lamp socket, the other end member pro vided with a hook integral therewith.

3. An extensible lamp socket comprising a plurality of U-shape members of progressively decreasing width pivotally connected in end to end relation, one of said end members provided with means for engaging a lamp socket, and the other end member provided with a hook integraltherewith and having a plurality of registering holes in said hook as and for the purposes described.

In testimony whereof I have hereunto set my hand at San Francisco, California, this 1st day of April, 1919.

MARTIN DOERR.

In presence of A. .J. HENRY. 

